Changing parentheses into square brackets for creating materials_file
Changing parentheses into square brackets for creating materials_file

amandalund/openmc,johnnyliu27/openmc,paulromano/openmc,shikhar413/openmc,amandalund/openmc,shikhar413/openmc,johnnyliu27/openmc,walshjon/openmc,mit-crpg/openmc,paulromano/openmc,paulromano/openmc,wbinventor/openmc,wbinventor/openmc,liangjg/openmc,shikhar413/openmc,shikhar413/openmc,mit-crpg/openmc,smharper/openmc,wbinventor/openmc,liangjg/openmc,smharper/openmc,mit-crpg/openmc,wbinventor/openmc,johnnyliu27/openmc,smharper/openmc,amandalund/openmc,liangjg/openmc,walshjon/openmc,walshjon/openmc,amandalund/openmc,smharper/openmc,paulromano/openmc,liangjg/openmc,walshjon/openmc,johnnyliu27/openmc,mit-crpg/openmc